8 Ss practiced reaching movements for 15 min. while viewing their hands through laterally oriented 20-diopter wedge prisms. Following adaptation, Ss sat quietly in the dark for an additional 15 min., after which prism adaptation was found to be significantly reduced (p < .005). This result indicates that under these conditions the normal visuomotor coordinations are not lost and replaced by an equivalent set of prism-altered ones, as suggested by previous work, but are in fact retained and reinstated following prism removal in the absence of any visual feedback. (PsycINFO Database Record (c) 2006 APA, all rights reserved)